Description

Factory 4.1 RCT Exhaust System

• The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally
• Shorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
• The Factory 4.1 RCT is constructed from only aerospace grade materials that meet FMF's exacting specifications and is manufactured 100% at their Southern California factory
• Massive Power gains throughout the RPM range.
• Huge weight savings
• New RTS (Rapid Tuning System)
• Includes MegaBomb header
• Includes spark arrestor screen insert

Includes 94dB insert.

APPLICATION
Yamaha YZ 250 2022-2024
Yamaha YZ 250 50th Anniversary Edition 2024-2024
Yamaha YZ 250 F 2019-2023
Yamaha YZ 250 F Monster Energy Racing Edition 2021-2023
Yamaha YZ 250 FX 2020-2024